<template>
  <div>
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片区域-->
    <el-card class="box-card">
      <!--搜索与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <!--商品列表表格-->
      <el-table :data="goodsList" border stripe>
        <!-- 索引列-->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="100px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="75px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-button type="primary" size="mini" icon="el-icon-edit" @click="showGoodsInfo(scope.row.goods_id)"></el-button>
            <!--删除按钮-->
            <el-button type="danger" size="mini"
                       icon="el-icon-delete" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!--分页区域-->
      <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :current-page="queryInfo.pagenum"
              :page-sizes="[5, 10, 15, 20]"
              :page-size="queryInfo.pagesize"
              layout="total, sizes, prev, pager, next, jumper"
              :total="total" background>
      </el-pagination>
    </el-card>

    <!--修改商品信息对话框-->
    <el-dialog
            title="修改商品信息"
            :visible.sync="editGoodsVisible"
            width="50%" @close="editGoodsClose">
      <el-form :model="editGoodsForm" :rules="editGoodsFormRules" ref="editGoodsFormRef" label-width="100px">
      <el-form-item label="商品名称" prop="goods_name">
        <el-input v-model="editGoodsForm.goods_name"></el-input>
      </el-form-item>
      <el-form-item label="商品价格" prop="goods_price">
        <el-input v-model="editGoodsForm.goods_price"></el-input>
      </el-form-item>
      <el-form-item label="商品重量" prop="goods_weight">
        <el-input v-model="editGoodsForm.goods_weight"></el-input>
      </el-form-item>
    </el-form>
      <span slot="footer" class="dialog-footer">
       <el-button @click="editGoodsVisible = false">取 消</el-button>
       <el-button type="primary" @click="editGoodsInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    name: "List",
    data() {
      return {
        // 查询参数对象
        queryInfo: {
          query: '',
          pagenum: 1,
          pagesize: 10
        },
        // 商品列表
        goodsList: [],
        // 商品总条数
        total: 0,
        editGoodsVisible: false,
        editGoodsForm: {},
        editGoodsFormRules: {
          goods_name: [{required: true, message: '请输入商品名称', trigger: 'blur'}],
          goods_price: [{required: true, message: '请输入商品价格', trigger: 'blur'}],
          goods_weight: [{required: true, message: '请输入商品重量', trigger: 'blur'}],
        }
      }
    },
    created() {
      this.getGoodsList()
    },
    methods: {
      // 根据分类获取对应的商品列表
      async getGoodsList() {
        const {data: res} = await this.$http.get('goods', {params: this.queryInfo})
        if (res.meta.status !== 200) return this.$message.error('获取商品列表数据失败!')
        this.goodsList = res.data.goods
        this.total = res.data.total
      },
      // 控制当前显示 数据数量
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize
        this.getGoodsList()
      },
      // 控制当前显示 数据页码
      handleCurrentChange(newPage) {
        this.queryInfo.pagenum = newPage
        this.getGoodsList()
      },
      // 根据id 删除对应商品
      async removeById(id) {
        const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除该商品!')
        }
        const {data: res} = await this.$http.delete(`goods/${id}`)
        if (res.meta.status !== 200) return this.$message.error('删除该商品失败!')
        this.$message.success('已成功删除该商品!')
        this.getGoodsList()
      },
      // 添加商品
      goAddPage() {
        this.$router.push('/goods/add')
      },
      // 展示要修改的商品信息
      async showGoodsInfo(goodsId) {
        const {data:res} = await this.$http.get(`goods/${goodsId}`)
        if(res.meta.status !== 200) return this.$message.error('获取商品信息失败!')
        this.editGoodsForm = res.data
        this.editGoodsVisible = true
      },
      // 监听对话框关闭事件，重置表单
      editGoodsClose() {
        this.$refs.editGoodsFormRef.resetFields()
      },
      // api接口有点问题
      editGoodsInfo() {
        this.$refs.editGoodsFormRef.validate(async valid => {
          if(!valid) return
          const {data:res} = await this.$http.put('goods/'+ this.editGoodsForm.goods_id,
              {goods_name: this.editGoodsForm.goods_name,goods_price: this.editGoodsForm.goods_price,
                goods_number: this.editGoodsForm.goods_number, goods_weight: this.editGoodsForm.goods_weight})
          if(res.meta.status !== 201) return this.$message.error('修改商品信息失败!')
          this.$message.success('修改商品信息成功!')
          this.editGoodsVisible = false
          this.getGoodsList()
        })
      }
    }
  }
</script>

<style scoped>

</style>
